Patent US3558257A successfully refreshed from Google Patents.
US3558257A
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Sprinkling process and apparatus therefor
Assignee: GIFFORD HILL WESTERN
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Filing: 1969-10-21
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Granted: 1971-01-26
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Expires: 1989-10-21
Abstract
Abstract A COMBINATION OF IRRIGATION SPRINKLER SUPPORTING PIPE SECTIONS AND MOVABLE PIPE SUPPORTING TOWERS RIGIDLY UNITIZED WITH TRACTION SENSITIVE MOTORS ON EACH TOWER STATION, THE UNITS OF MOVABLE TOWERS AND THE PIPE THEREBETWEEN POWERED TO MOVE CONTINUOUSLY AND EVENLY IN A PRESENT FORMATION IN A CIRCULAR PATTERN AND THEREBY DISTRIBUTE IRRIGATION WATER IN AN EVEN AND PREDICTABLE MANNER OVER UNDULATING AS WELL AS FLAT GROUND.
Inventors
- 👤 Harold Jay Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:08
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/09; A01G25/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |